Trip device for preventing breakage of transmission ropes



June 16,. 1925. v

. s. TEMBEY TRIP DEVICE FOR PREVENTING BREAKAGE OF TRANSMISSION ROPESFiled Oct. 30. 1924 jn rentof .54 mue/ 75217 W Patented'June 16, 1925.UNITED STATES PATENT; OFFICE. r

saivrnnn TEMBEY, on NANAIMO, BRITISH co UMBracAnAnA.

TRIP DEVICE FOR PREVENTING BREAKAGE F TRANSM ISSION ROPES. i

Application filed October 30, 1924. Serial No. 746,907.

To all whom it may concern:

Be it known that I, SAMUEL TnMnnY, a subject of the King of: GreatBritain, and a resident of the city of Nanaimo, in the Province ofBritish Columbia, Canada, have invented certain new and usefulImprovements in Trip Devices for Preventing Breakage of TransmissionHopes, of which the following is a specification; i

My invention relates to improvements in trip devices for preventing thecomplete breakage of transmission ropes, and the object oi my inventionis to provide a simple, inexpensive, and easily installed device adaptedto be operated practically instantaneously by the rope when a strand ofthe same breaks to shut off the power and stop the operation of thedriver, thus preventing the complete breakage of the rope and en ablingit to be readily repaired and opera-- ations resumed without any unduedelay.

I attain this object by the construction illustrated in the accompanyingdrawings in which- Fig. 1 is a side view of my device.

F 2 is a plan view.

Similar figures of reference indicate similar parts in the views.

1 indicates the rope pulley, the driver, the direction of its rotationbeing indicated by the arrows in Fig. 1. Disposed transversely acrossthe face of the pulley and in close proximity thereto is a rod 2 formedas a crank as to its ends 3 and 4 and arranged normally in a horizontalposition, the ends 3 and 4 being freely supported in suitably securedbearings 5 and 6, and one end, 3, is bent at right angles and extended,as at 7, to carry a counterweight, 8, while the oppo site end, 1, isbent to provide an inwardly and downwardly inclined arm 9 the outer endof which is jawed, as at 10.

11 indicates a link pivotally hung at and to a suitable place by a pin12secured into the upper end of the link, which link is providedintermediate its length and at its.

lower end with pins 13 and 141 respectively, and is connected to the arm9 by a connecting rod 15 attached at its opposite ends respectively tothe jaw 10 of-the arm 9 and the lower pin 14.

16 indicates the governor lever which when moved in the direction of thearrow about its pivot 17 draws the rod 1.8 in the same direction. andoperates the governor valve to shut the steam off the engine, the

lower end of which lever 16 is normally in contact with the upturned end19 of a lever 20 pivoted adjacent its outer end on a suit, ably. securedpivot '21 while its opposite end rests on the intermediate pin 13 of thelink 11, and at a suitable point in the length of this lever 20 is hunga counterweight 22, as

shown in Fig. 1.

It will, of course, be understood that the complete device is assembledand supported in approved mechanical manner.

In use the crank is disposed horizontally with the member 2 lying closeto the rim of the pulley 1 and the end of the lever 20 resting on thepin 13, the link 11 being vertical and the entire device being arrangedas indicated by the full lines in Fig. 1. On a strand of a rope becomingloose it flies out as the pulley rotates and strikes the rod 2immediately, knocking it upwardly, thus drawing the link 11 forwardly sothat the pin 13 is drawn from under the end of the lever 20, which fallsdownwardly and swings the end 19 around on its pivot 21, thus moving thegovernor lever 16 in the direction of the arrow and closing the valve,all as indicated by the dotted lines in Fig. 1, so that the steam isshut off the engine practically coincidently with the stranding off therope, thereby preventing its stranding any further with consequentcomplete breakage.

From the foregoing it will be seen that I have devised a simple meansfor preventing breakage of transmission ropes, which is easily installedand maintained, and which accomplishes its object in a highly practicaland efficient manner..

What I claim as my invention is 1. A trip device for preventing completebreakage of transmission ropes after partial breakage comprising, aweighted lever up-- turned and pivoted at one end, withdrawable meansmaintaining said lever normally .horizontal, and means adapted to beactuated by an outflying rope strand to withdraw the withdraw-able meansclear of the lever.

2. A trip device for preventing complete breakage of transmission ropesafter partial breakage comprising, a lever upturned and pivoted atoneend weighted intermediate its length, a vertical link pivoted at itsupper end having a pin intermediate its length on which the free end ofsaid lever is supported maintaining it normally horizontal, and meansadapted to be actuated by an outfiying ropestrand to swing'theilink andcarry its intermediate pin clear ofthe lever.

3. A trip device for preventing complete breakage of transmission ropesafter partial breakage comprising, a lever upturned and pivoted at oneend Weighted intermediate its length, a vertical link pivotediat itsupper end having a pin intermediate its length on which the :t'ree endof said lever is supportedmaintaining it normally horizontal, a roddisposed transversely in close proximity to the transmission 'ropedriving pulley rim having crank ends supported in suitably mountedbearings, one of said ends beingbent to dorm-an arm, anda connecting rodbetween said arm and the lower end of the vertical link.

A trip device "for preventing complete length, a vertical link pivotedat its upper end having a pin'intermediate its length on whit-lithefree-end-ofsaidrlever is supported maintaining it normally horizontal, arod disposed transversely in close proximity to the transmission ropedriving pulley rim having crank ends supported in suitably mountedbearings, -one of said ends being bent to form right angled extensionand provided ovith a counterweight and the other to form an arm, and'aconnecting rod between said warm and the lower end of the verticallink.

Dated-at Nanai1no,-B.-C. this 11th day of October, 1924.

SAMUEL TEMBEY.

